Method of joint inversion of seismic data represented on different time scales
US8255166B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2009 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Nov 22, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V11/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention is a method of constructing an image representative of a heterogeneous medium by a procedure of joint inversion of seismic data represented on different time scales having an application for underground reservoir exploration. Sequential inversion of the seismic data is performed so as to determine a first model from the seismic data expressed in a first time scale, and a second model from the seismic data expressed in the second time scale. A scale factor t1(t0) allowing synthetic data described in a first time scale to be expressed in a second time scale is defined by a differential equation relating the traveltime variations of a seismic wave to the models resulting from the sequential inversion. Finally, joint inversion wherein a cost function using the scale factor is minimized is carried out so as to evaluate a difference between the synthetic data and the seismic data expressed in another time scale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.